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davisgurl101

  • 3 years ago

Is the following relation a function?

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  1. davisgurl101
    • 3 years ago
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  2. hsmt
    • 3 years ago
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    are you still there?

  3. davisgurl101
    • 3 years ago
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    yes

  4. hsmt
    • 3 years ago
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    well, for each individual x there can be only one y

  5. hsmt
    • 3 years ago
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    that is, if you want the relation to be a function.

  6. akash_809
    • 3 years ago
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    for a relation to be a function, for one value of x ther should only be one value of x

  7. hsmt
    • 3 years ago
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    another way to do this is to graph it

  8. akash_809
    • 3 years ago
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    for x=-1, there are two values of y

  9. hsmt
    • 3 years ago
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    exactly right akash.

  10. akash_809
    • 3 years ago
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    making a graph would make this tedious

  11. hsmt
    • 3 years ago
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    not really. only what four or five points, and remember, some people are more visual

  12. akash_809
    • 3 years ago
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    @davisgurl101 did u get this

  13. davisgurl101
    • 3 years ago
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    i dont under stand

  14. akash_809
    • 3 years ago
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    but seeing the set would make it easy to solve, if u draw the graph then u have to dwar a line parallel to y -axis and see at how many points the line cuts the graph...

  15. akash_809
    • 3 years ago
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    a relation is afunction if and only if a value of x in the relation corrospons to unique value of y...can u understand this definition

  16. akash_809
    • 3 years ago
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    @davisgurl101 if u understand the above definition then you should have ur answer, if u don't ask ur doubt

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